build(deps): bump go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc from 0.49.0 to 0.50.0 in /tools/invoker #1082

Job	Run time
Build and push all images (fibonacci-go, fibonacciGo)	4m 32s
Build and push all images (fibonacci-python, fibonacciPython)	2m 6s
Build and push all images (fibonacci-nodejs, fibonacciNodeJS)	1m 50s
Test Knative Deployment (fibonacci-go)	1m 54s
Test Knative Deployment (fibonacci-python)	2m 7s
Test Docker Compose (fibonacci-go)	1m 11s
Test Knative Deployment (fibonacci-nodejs)	1m 59s
Test Docker Compose (fibonacci-python)	1m 18s
Test Knative Deployment (fibonacci-go-tracing)	2m 7s
Test Docker Compose (fibonacci-nodejs)	1m 13s
Test Knative Deployment (fibonacci-python-tracing)	2m 21s
Test Docker Compose (fibonacci-go-tracing)	1m 12s
Test Knative Deployment (fibonacci-nodejs-tracing)	2m 11s
Test Docker Compose (fibonacci-python-tracing)	1m 19s
Test Docker Compose (fibonacci-nodejs-tracing)	1m 16s
	28m 36s

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